Email, Spam Control, Can the quarantine be deleted?
Spam Control is not designed to allow you to manually delete the contents of your quarantine. The messages are automatically removed after 10 days.
Can I deleted the spam in my quarantine?
Remember, the contents of the quarantine do not count towards your email quota. If you feel that there are too many messages to scroll through in your daily digest and you are currently in the Cautious Personal Spam Policy, then you might consider changing to the Aggressive Personal Spam Policy. With this option, the worst of the spam is automatically deleted instead of being sent to your quarantine. The result is that you should see a smaller list of messages in your daily digest.
These instructions in our knowledge base will help you How to Change Your Spam Policies.